6. When the ambient temperature is too high or the heat dissipation conditions are poor, LED display should not be working for a long time.

7. LED displays powered up on the condition of exceeding the specified humidity ,may lead its parts corrode even short-circuit and cause permanent damage.

8. LED displays inner were forbidden to enter water, iron powder and other easily conductive metals.They should be placed in a low-dust environment as much as possible. They also would be affected by large dust, and excessive dust can damage the circuit. If water enters LED display inner for various reasons, switch off the power immediately until all components in the screen are dry.